. Electric railway journal . yer, who is the auditor of the Indiana Union TractionCompany, Anderson, Ind. The cost is $1 for three copies. June 3, 1911.] ELECTRIC RAILWAY JOURNAL. 95i PARMA SINGLE-PHASE RAILWAY The provincial government of Parma, Italy, has been oper-ating since May, 1910, a single-phase railway system, consistingof km (9 miles) of city track and 39 km ( miles) ofsuburban track. A preliminary article on the equipment of thisline was published in the Electric Railway Journal for , 1909, on page 1061. The following additional particulars apart with the main or upp
. Electric railway journal . yer, who is the auditor of the Indiana Union TractionCompany, Anderson, Ind. The cost is $1 for three copies. June 3, 1911.] ELECTRIC RAILWAY JOURNAL. 95i PARMA SINGLE-PHASE RAILWAY The provincial government of Parma, Italy, has been oper-ating since May, 1910, a single-phase railway system, consistingof km (9 miles) of city track and 39 km ( miles) ofsuburban track. A preliminary article on the equipment of thisline was published in the Electric Railway Journal for , 1909, on page 1061. The following additional particulars apart with the main or upper catenary having a sag of m(4 ft. 11 in.). The auxiliary catenary is suspended from themain catenary at intervals of 16 m (52 ft. 6 in.) and the con-tact wire in turn is carried at intervals of 8 m (26 ft. 3 in.)from the auxiliary catenary. The copper contact wire is keptat a tension of 300 kg (660 lb.) by automatic counterweightsplaced every 1500 m (4925 ft.). The poles on the suburban sections are of chestnut. In the. Parma Single-Phase Railway—Lattice Pole and CurvedBracket Construction in the City are based on an article by Arnold Derrer in a recent numberof the Elektrisclie Kraftbetriebe und Bahnen. The track construction consists of grooved rails weighing 42kg per meter (84 lb. per yard) in the city and of T-railsweighing 21 kg per meter (42 lb. per yard) in the average clearance between the trolley line and the head of
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